start new:
tmux
start new with session name:
tmux new -s myname
/* | |
* System Versioning Preprocessor Macros | |
*/ | |
#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame) | |
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending) | |
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending) | |
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending) | |
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending) |
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
# xcode-build-bump.sh | |
# @desc Auto-increment the build number every time the project is run. | |
# @usage | |
# 1. Select: your Target in Xcode | |
# 2. Select: Build Phases Tab | |
# 3. Select: Add Build Phase -> Add Run Script | |
# 4. Paste code below in to new "Run Script" section | |
# 5. Drag the "Run Script" below "Link Binaries With Libraries" | |
# 6. Insure that your starting build number is set to a whole integer and not a float (e.g. 1, not 1.0) |
// #!Swift-1.1 | |
import Foundation | |
// MARK: - (1) classes | |
// Solution 1: | |
// - Use classes instead of struct | |
// Issue: Violate the concept of moving model to the value layer | |
// http://realm.io/news/andy-matuschak-controlling-complexity/ |